4.
experiments prove.
When defining the assumption or assignment answers, and then to do an experiment to prove every. To verify assumptions made by the controlled experiment (experiment Control) control group (group Controlled). ( Experiment group )
What must the same control is what we do not want to study what you want to study it, we call it different variables (Voriables), such as, for example, the
1. The growth of vegetables, kale and lettuce Need a pH between 5 – 6
The variable is the pH of an aqueous solution of fertilizer according to the variable
is to the growth of vegetables
variables that need to control the temperature, humidity, lighting is. The quantity of the substance soluble fertilizers every planting machine. Seed
การแปล กรุณารอสักครู่..
